Search Results - "Fontes, C.J."

Relativistic opacities for astrophysical applications by Fontes, C.J., Fryer, C.L., Hungerford, A.L., Hakel, P., Colgan, J., Kilcrease, D.P., Sherrill, M.E.

“…We report on the use of the Los Alamos suite of relativistic atomic physics codes to generate radiative opacities for the modeling of astrophysically relevant…”
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Review of the 9th NLTE code comparison workshop by Piron, R., Gilleron, F., Aglitskiy, Y., Chung, H.-K., Fontes, C.J., Hansen, S.B., Marchuk, O., Scott, H.A., Stambulchik, E., Ralchenko, Yu

“…We review the 9th NLTE code comparison workshop, which was held in the Jussieu campus, Paris, from November 30th to December 4th, 2015. This time, the workshop…”
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Testing the reliability of non-LTE spectroscopic models for complex ions by Hansen, Stephanie, Armstrong, G.S.J., Bastiani-Ceccotti, S., Bowen, C., Chung, H.-K., Colgan, J.P., de Dortan, F., Fontes, C.J., Gilleron, F., Marquès, J.-R., Piron, R., Peyrusse, O., Poirier, M., Ralchenko, Yu, Sasaki, A., Stambulchik, E., Thais, F.

“…Collisional-radiative atomic models are widely used to help diagnose experimental plasma conditions through fitting and interpreting measured spectra. Here we…”
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A higher-than-predicted measurement of iron opacity at solar interior temperatures by Bailey, J. E., Nagayama, T., Loisel, G. P., Rochau, G. A., Blancard, C., Colgan, J., Cosse, Ph, Faussurier, G., Fontes, C. J., Gilleron, F., Golovkin, I., Hansen, S. B., Iglesias, C. A., Kilcrease, D. P., MacFarlane, J. J., Mancini, R. C., Nahar, S. N., Orban, C., Pain, J.-C., Pradhan, A. K., Sherrill, M., Wilson, B. G.

“…Laboratory measurements of iron opacity made under conditions similar to those inside the Sun reveal much higher opacity than predicted, helping to resolve…”
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The STAG code: A fully relativistic super transition array calculation using Green’s functions by Gill, N.M., Fontes, C.J., Starrett, C.E.

“…Calculating opacities for a wide range of plasma conditions (i.e. temperature, density, element) requires detailed knowledge of the plasma configuration space…”
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Review of the 10th Non-LTE code comparison workshop by Hansen, S.B., Chung, H.-K., Fontes, C.J., Ralchenko, Yu, Scott, H.A., Stambulchik, E.

“…We report on the results of the 10th Non-LTE code comparison workshop, which was held at the University of San Diego campus November 28 through December 1,…”
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Detailed temperature diagnostic studies for Radishock and COAX experiments by Fryer, C.L., Wood, S., Coffing, S.X., Robey, H.F., Fontes, C.J., Johns, H., Kozlowski, P., Urbatsch, T., Lanier, N.E., Meyerhofer, D.D., Byvank, T.

“…Spectral diagnostics provide a powerful probe of high energy-density physics experiments. By shining an x-ray source on a target, absorption features can be…”
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Designing radiation transport tests: Simulation-driven uncertainty-quantification of the COAX temperature diagnostic by Fryer, C.L., Diaw, A., Fontes, C.J., Hungerford, A.L., Kline, J., Johns, H., Lanier, N.E., Wood, S., Urbatsch, T.

“…One of the difficulties in developing accurate numerical models of radiation flow in a coupled radiation-hydrodynamics setting is accurately modeling the…”
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Light element opacities of astrophysical interest from ATOMIC by Colgan, J., Kilcrease, D.P., Magee, N.H., Abdallah, J., Sherrill, M.E., Fontes, C.J., Hakel, P., Zhang, H.L.

“…We report on our continued work to produce a new set of local-thermodynamic-equilibrium (LTE) opacity tables using the Los Alamos ATOMIC code. OPLIB tables for…”
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Review of the NLTE-5 kinetics workshop by Fontes, C.J., Abdallah, J., Bowen, C., Lee, R.W., Ralchenko, Yu

“…We review the 5th non-LTE kinetics code comparison workshop, held in November 2007. Both steady-state and time-dependent cases for elements ranging from carbon…”
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Atomic structure considerations for the low-temperature opacity of Sn by Colgan, J., Kilcrease, D.P., Abdallah, J., Sherrill, M.E., Fontes, C.J., Hakel, P., Armstrong, G.S.J.

“…We have begun a preliminary investigation into the opacity of Sn at low temperatures (< 50 eV). The emissivity and opacity of Sn is a crucial factor in…”
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An equation of state for partially ionized plasmas: The Coulomb contribution to the free energy by Kilcrease, D.P., Colgan, J., Hakel, P., Fontes, C.J., Sherrill, M.E.

“…We have previously developed an equation of state (EOS) model called ChemEOS (Hakel and Kilcrease, Atomic Processes in Plasmas, Eds., J. Cohen et al., AIP,…”
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Comparison and analysis of collisional-radiative models at the NLTE-7 workshop by Chung, H.-K., Bowen, C., Fontes, C.J., Hansen, S.B., Ralchenko, Yu

“…We present the main results of the 7th Non-Local Thermodynamic Equilibrium Code Comparison Workshop held in December 2011 in Vienna, Austria. More than twenty…”
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Iso-nuclear tungsten dielectronic recombination rates for use in magnetically-confined fusion plasmas by Kwon, D.-H., Lee, W., Preval, S., Ballance, C.P., Behar, E., Colgan, J., Fontes, C.J., Nakano, T., Li, B., Ding, X., Dong, C.Z., Fu, Y.B., Badnell, N.R., O’Mullane, M., Chung, H.-K., Braams, B.J.

“…Under the auspices of the IAEA Atomic and Molecular Data Center and the Korean Atomic Energy Research Institute, our assembled group of authors has reviewed…”
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A temperature profile diagnostic for radiation waves on OMEGA-60 by Johns, H.M., Fryer, C.L., Wood, S.R., Fontes, C.J., Kozlowski, P.M., Lanier, N.E., Liao, A., Perry, T.S., Morton, J.W., Brown, C.R.D., Schmidt, D.W., Cardenas, T., Urbatsch, T.J., Hakel, P., Colgan, J., Coffing, S., Cowan, J., Capelli, D., Goodwin, L.A., Quintana, T.E., Hamilton, C., Fierro, F., Wilson, C., Randolph, R.B., Donovan, P., Sedillo, T., Gonzales, R., Sherrill, M.E., Douglas, M.R., Garbett, W.J., Hager, J.D., Kline, J.

“…Predicting and matching radiation wave propagation with computational models has proven difficult. Information provided by experiments studying radiation flow…”
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Light element opacities from ATOMIC by Colgan, J., Kilcrease, D.P., Magee, N.H., Armstrong, G.S.J., Abdallah, J., Sherrill, M.E., Fontes, C.J., Zhang, H.L., Hakel, P.

“…We present new calculations of local-thermodynamic-equilibrium (LTE) light element opacities from the Los Alamos ATOMIC code. ATOMIC is a multi-purpose code…”
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Towards a determination of absolute cross sections for projectile excitation of hydrogen‐like uranium in collisions with neutral atoms by Weber, G., Gumberidze, A., Herdrich, M.O., Märtin, R., Spillmann, U., Surzhykov, A., Thorn, D.B., Trotsenko, S., Petridis, N., Fontes, C.J., Stöhlker, Th

“…Recently, the contribution of the generalized Breit interaction to electron impact ionization was identified for the first time in a high‐Z system, namely,…”
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Model uncertainties of local-thermodynamic-equilibrium K-shell spectroscopy by Nagayama, T., Bailey, J.E., Mancini, R.C., Iglesias, C.A., Hansen, S.B., Blancard, C., Chung, H.K., Colgan, J., Cosse, Ph, Faussurier, G., Florido, R., Fontes, C.J., Gilleron, F., Golovkin, I.E., Kilcrease, D.P., Loisel, G., MacFarlane, J.J., Pain, J.-C., Rochau, G.A., Sherrill, M.E., Lee, R.W.

“…Local-thermodynamic-equilibrium (LTE) K-shell spectroscopy is a common tool to diagnose electron density, ne, and electron temperature, Te, of…”
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Uncertainties in radiation flow experiments by Fryer, C.L., Dodd, E., Even, W., Fontes, C.J., Greeff, C., Hungerford, A., Kline, J., Mussack, K., Tregillis, I., Workman, J.B., Benstead, J., Guymer, T.M., Moore, A.S., Morton, J.

“…Although the fundamental physics behind radiation and matter flow is understood, many uncertainties remain in the exact behavior of macroscopic fluids in…”
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Measurements of iron plasma opacity at solar interior temperatures by Bailey, James E., Nagayama, Taisuke, Loisel, Guillaume Pascal, Rochau, Gregory Alan, Blancard, C., Colgan, J., Cosse, Ph, Faussurier, G., Fontes, C.J., Gilleron, F., Golovkin, I., Hansen, Stephanie B., Iglesias, C.A., Kilcrease, D.P., MacFarlane, J. J., Mancini, Roberto Claudio, Orban, C., Pain, J.-C, Pradhan, A.K., Sherrill, M., Wilson, B.G.

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